PCHPDDMGetSTShareSubKSP#

Gets whether the KSP in SLEPc ST and the fine-level subdomain solver is shared.

Synopsis#

#include "petscpc.h" 
PetscErrorCode PCHPDDMGetSTShareSubKSP(PC pc, PetscBool *share)

Input Parameter#

pc - preconditioner context

Output Parameter#

share - whether the KSP is shared or not

Note#

This is not the same as PCGetReusePreconditioner(). The return value is unlikely to be true, but when it is, a symbolic factorization can be skipped when using a subdomain PCType such as PCLU or PCCHOLESKY.

Level#

advanced

Location#

src/ksp/pc/impls/hpddm/pchpddm.cxx

Examples#

src/ksp/ksp/tutorials/ex76.c

Implementations#

PCHPDDMGetSTShareSubKSP_HPDDM in src/ksp/pc/impls/hpddm/pchpddm.cxx

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